Muscles of the Thorax (Origin, Insertion, Function)

Опубликовано: 10 Май 2026
на канале: Taim Talks Med

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Content
0:00 Introduction
0:10 Division of the Thoracic Muscles
1:05 Subclavius Muscle
1:24 Serratus Anterior
1:58 Pectoralis Minor
2:23 Pectoralis Major
2:56 Subcostal Muscles
3:26 Transverse Thoracis
3:44 Internal Intercostal Muscles
3:59 External Intercostal Muscles
4:18 Levatores Costarum Muscles

Superficial Muscles
Thoracohumeral muscles
Subclavius
Serratus Anterior
Pectoralis Minor
Pectoralis Major

Deep Muscles
Proper muscles of the thorax
External Intercostal muscles
Internal Intercostal muscles
Subcostal
Transverse Thoracis
Levatores Costarum

Subclavius
musculus subclavius
Origin: First Rib
Insertion: Lower surface of clavicle

Serratus Anterior
musculus serratus anterior
Origin: External Surface of Ribs 1-9
Insertion: Medial border of Scapula

Pectoralis Minor
musculus pectoralis minor
Origin: External Surface of Ribs 3-5
Insertion: Coracoid process of Scapula
processus coracoideus scapulae

Pectoralis Major
musculus pectoralis major
Clavicular Part
Pars clavicularis
Sternocostal Part
Pars sternocostalis
Abdominal Part
Pars abdominalis
Insertion: Crest of the greater tubercle
crista tuberculi majoris humeri

Subcostal Muscles
Musculi subcostales
Origin: Lower Rib
Insertion: Upper Rib

Transverse Thoracis
musculus transversus thoracis
Origin:
Internal Surface of Sternum
Xiphoid Process
Cartilage of 4th-7th Rib
Insertion: Cartilage of 2nd-6th Rib

Internal Intercostal muscles
musculus intercostales interni
Origin: Lower Rib
Insertion: Upper Rib

External Intercostal muscles
Musculi intercostalis externi
Origin: Upper Rib
Insertion: Lower Rib

Levatores costarum
Musculi levatores costarum
Levatores costarum breves
○ Origin:
Transverse Process C7-T11
○ Insertion:
One Rib Below
Levatores costarum longi
○ Origin:
Transverse Process T8-T11
○ Insertion:
Two Ribs Below